Heart rate variability helps tracking time more accurately.

Area of Science:

• Neuroscience
• Psychology
• Physiology

Background:

• Accurate time perception is vital for daily functioning.
• Variations in internal pacemaker pulse emission are linked to temporal errors.
• Physiological changes may not only affect pacemaker variability but also act as internal timekeepers.

Purpose of the Study:

• To investigate the relationship between autonomic activity, interoceptive awareness, and temporal abilities.
• To explore how physiological signals influence time perception in healthy adults.

Main Methods:

• Assessed autonomic activity at rest using electrocardiogram, impedance cardiography, and skin conductance.
• Evaluated temporal abilities through time bisection and finger tapping tasks.
• Analyzed the correlation between autonomic profiles and performance on temporal tasks in 30 healthy young adults.

Main Results:

• Heart rate variability (HRV) significantly affects time perception.
• Increased HRV was associated with enhanced temporal accuracy.
• Higher vagal control correlated with reduced error in 1-second tempo production.
• Greater overall HRV was linked to lower constant error in the time bisection task.

Conclusions:

• Bodily signals, particularly autonomic activity, play a role in shaping our perception of time.
• Autonomic nervous system function is a potential modulator of temporal accuracy.